Elevator.



No."729,433. PATENTED MA'Y26,1908. A. c. SMITILp ELEVATOR.

, APPLICATION rmm 00T.13, 1902.

H0 MODEL.

.flzt si-i V Inwnivr} 6% W IQ V UNITED STATES Patented May 26, 1903.

PATENT OFFICE.

AMOUR COLUMBUS SMITH, OF NEW YORK, N. Y: ASSIGNOR TO MARINE ENGINE'AND MACHINE COMPANY, OF HARRISON, NEIV JERSEY, A

CORPORATION OF NEW JERSEY.

ELEVATO R.

SPECIFICATION forming part of Letters Patent N 0. 729,433, dated May 26, 1903.

Application filed October 13, 1902. Serial No. 127,032. (No model.)

, T at whom it may concern:

Be it known that I, AMOUR COLUMBUS in the borough of Manhattan, in the city of} New York, State of New York, have invented certain new and useful Improvements in Elevators, of which the following is a specifica tion', reference being had to the accompany-1 ing drawings, forming a part hereof.

Thisinvention relates to the means for controlling the movement of elevator-cars, and more especially to those devices which are operated by the conductor to actuate the valve, switch, or other device by which the speed and direction of movement of the hoisting mechanism are controlled.

One object is to make the controlling-rope stationary with respect to the carthat is, to move with the car in the same direction and at the same rate--so that it can at all times be readily grasped by the conductor and without danger of wearing or tearing his hands.

Another object is to multiply the power exerted by the operator, so that a slight pull shall be suflicient to move the controlling device in either direction.

The invention will be more fully described hereinafter with reference to the accompanying drawings, in which for purposes of illustration and explanation it is illustrated as embodied in convenient and practical forms, and in which* Figure l-is'an outline drawing illustrating one application of the invention, the wellknown devices being indicated conventionally. Fig. 2 is a similar viewillustrating another application of the invention.

The elevator-car a and its hoisting mechanism (represented in Fig. l by a hoistingrope b, a drum 0, and a motor d) may be constructed and arranged in any usual or preferred manner, the present inventionnot being concerned therewith. If a counterweight e is employed, as indicated in Fig. 1 the same being connected to the car by a rope f, running over guide sheaves g, as usual, advantage is taken of'its'e'mployment to effect the necessary movement of the controlling-rope, while if such counterbalance-weight and rope are notemployed a rope f, running over guidesheaves g and g at the top and bottom of the elevator-shaft, is provided, such rope having its ends connected to the car, as shown in Fig. 2, so that it shall travel with the car.

over a sheave is, under a floating or movable sheave Z, and over a sheave m, the sheaves 7c and at being mounted, if desired, upon an ordinary compensating device, as shown in Fig. 1. At the bottom of the shaft the rope h passes under a sheave a, over a floating sheave 0, and under a sheave p, the standing part of the rope between the sheaves m and n passing through the car. The floating sheaves Z and o are connected to each other through the medium of the controller, which may be of any suitable character and is sufficiently indicated at q in Fig.1 and at qin Fig. 2, so that they shall move together and shall actuate the controller. Obviously the floating sheaves might be connected to the controller and to each other in different .ways. shown in Fig. 1, the floating sheaves are connected to ropes r and 7'', respectively, which pass about guide-sheaves sand 8' to opposite ends of the lever q in Fig. 1 or to opposite sides of the wheel q in Fig.- 2.

It will now be understood that the controlling-rope h moves or halts with the car under normal conditions, but is movable with respect to the car, and that a downward pull upon the rope within the car causes a corresponding upward movement of the floating sheave Z through a distance equal to one-half of the length of said pull and permits a corresponding upward movement of the floating sheave 0. Through the ropes r and r -a; like It is evident that any of the well-known arrangemen ts of starting levers or wheels might be applied to the controlling-rope within the car, if desired, and that in general the details of construction and arrangement may be varied from those shown in the drawings without departing from the spirit of the invention.

I claim as my invention 1. In an elevator, the combination ofa car, a rope connected to the car to move therewith, a controlling-rope having one part passed through the car and one part connected to the first-named rope, guide-sheaves for the controlling-rope at the top and bottom of the shaft, a controller, floating sheaves at the top and bottom of the shaft and about which the controller-rope is passed, and ropes connectin g said floating sheaves to opposite sides of the controller, substantially as described.

2. In an elevator, the combination of a car, a rope connected to the car to move therewith, a controlling-rope having one part passed through the car and one part connected to the first-named rope, a pair of guide-sheaves at the top of the shaft and a pair of guidesheaves at the bottom of the shaft, 3. floating sheaveintermediate the sheaves of each pair, the controlling-rope being passed about said guide-sheaves and floatingsheave,a controller and connections from said floating sheaves to said controller, substantially as described.

3. In an elevator, the combination of a car, a rope both ends of which are connected to the car to move therewith, a controlling-rope having one part passed through the car and another part connected to the first-named rope, guide-sheaves for the controlling-rope, a floating sheave about which the controllingrope passes, and a controller connected to said floating sheave, substantially as described.

4. In an elevator, the combination of a car, a rope both ends of which are connected to the car to move therewith, acontrolling-rope having one part passed through the car and another part connected to the first-named rope,

guide-sheaves for the controlling-rope at the top and bottom of the shaft, a controller and floating sheaves connected to the controller and to each other, the controlling-rope also passing about said floating sheaves, substantially as described.

This specification signed and witnessed this 23d day of September, A. D. 1902.

AMOUR COLUMBUS SMITH.

In presence of M. A. BRAYLEY, RosWELL S. NICHOLS. 

